The Fusions are still very blurry. Take the following with a grain of salt:

Masked HERO Kamikaze
WIND/Warrior
Level 8
Fusion/Effect
ATK 2700/DEF 1900
Must be Special Summoned with “Mask Change” and cannot be Special Summoned by other ways.
(1) Cannot be destroyed by battle.
(2) Your opponent can only attack with 1 monster during each Battle Phase.
(3) When this card destroys an opponent’s monster in battle and sends it to the Graveyard: (you can) draw 1 card.

Masked HERO Koga
LIGHT/Warrior
Level 8
Fusion/Effect
ATK 2500/DEF 1800
Must be Special Summoned with “Mask Change” and cannot be Special Summoned by other ways.
(1)This card gains (X00) ATK for each monster the opponent controls.
(2) Once per turn, during either player’s: You can banish 1 “HERO” monster in your Graveyard, then target 1 face-up monster on the field; until the end of this turn, that monster loses ATK equal to the ATK of the monster banished to activate this effect.